Stone-dressing machine.



No. 724,707; PATENTED' APR. "7, 1903. A, F. JONES. STONE DRESSING MACHINE.

. APPLIGATION FILED JUNE 6, 1900. N0 MODEL. v 4 SHEETS-BIKINI.

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JTORNEK Y No. 724,707. PATENTED APR. 7, 1903.

.A. F. JONES.

STONE DRESSING MACHINE. APPLIOATION FILED mm: a, 1900,

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I No.- 724,707. PATENTED APR. 7, 1903.

15'. JONES, STONE DRESSING MACHINE.

APPLIQATION FILED JUNE 6, 19 00. 7

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PATENTED APR. 7, 190$.

- A. I JONES.

STONE DRESSING MACHINE. APPLICATION FILED JUNE 6, 1900- N0 MODEL. 4 SHEETS-SHBET "a. v

WITNESSES: JNVENTOR.

'NITED STATES PATE T OFFICE.

ALBERT F. JONES, OF SALEM, MASSACHUSETTS, ASSIGNOR TO AMERICAN GRANITE MACHINE COMPANY, OF SALEM, MASSACHUSETTS, A CORPO- RATION' or MAINE.

. 'ISTONE-DRESSING MAcHlNE SPECIFICATION forming part of Letters 1;atent No. 724,707, dated April 7, 1903.

Application filed June 6, 1900. Serial No. 19,271. (No model.)

T at whom it may concern.-

- lem, county of Essex, and State of Massachusetts,have invented an Improvement in Stone- Dressing Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to stone-dressing machines, and is intended as an improvement upon the stone-dressing machine shown and described in my application for Letters Patent, Serial No. 18,584, filed May 31, 1900.

The invention has for its object to improve and simplify the construction of the tool-carrying head or turret-support; and it consists, essentially, in providing an oscillating frame beneath the revoluble turret which is carried by the turret-support, said oscillating frame being, eonstructed,"arranged, and supported so as to be turned on a horizontal axis at right angles to the movement of the turret and to suitably support a tool or tools, so that by turning said frame on its horizontal axis the tool or tools carried by it may be caused to occupy any different angle in the cycle in which said frame is rotated;

The invention also consists in providing means for varying the angle of the tool relative to the tool-carrying arm which is supported by said oscillating frame, also in an improved form of elastic actuator for the tool which is adapted to hold said tool in its lowermost position against afixed stop and which operates to suddenlythrust downward the tool Whenever said tool is raised against the action of said actuator and released, also in an improved form of operating device for raising said tool against the action of the elastic actuator which is constructed and arranged to operate in any position that the oscillating frame may be disposed relatively to the turret, and also in any position that the turret maybe set relative to the turret-support bear; ing it. v

Figure 1 shows in front elevation a turretsupport embodying this invention, the turret bearing the tools being swung on its vertical axis so that the tools which occupy a position oblique't-o a horizontal plane also occupy a position oblique to the travel of said turretsupport. Fig. 2 is a right-hand end view of the turret-support, showing the turret swung so that the obliquely-disposed tools occupy a position directlyin line with the travel of said turretsupport. Fig. 3 is a view showing in plan a portion of the frame of the turret-support and also showing a plan View of the turret. Fig. 4 is an enlarged vertical section of the turret-support shown in Fig. 1, taken onthe dotted line y, the tools being removed. Fig. 5 is a detail showing the cams on the camcarrying shaft for raising the tools against the action of an elastic actuator. Fig. 6 is a vertical section of the turret-support shown in Fig. 4, taken on the dotted line 2' of Fig. 2. Fig. 7 is a side view of a turret-support similar to Fig. 1, showing a bushing-tool provided in lieu of a pointing-tool. Fig. 8 is a side view of the turret-support similar to Fig. 7, showing the frame bearing the tools turned on its horizontal axis into position whereby the tools may operate as chiseling-tools in a vertical direction on the side of a stone.

The frame of the turret-support comprises, essentially, a pair of parallel boxes 19 b, which embrace horizontal bars a a, on which said turret-support travels back and forth, a cylindrical shell b cast integral with the upper members of said'boxes b b, a pair of yokes e e, boltedto'the opposite ends of said boxes, and a yoke e, bolted at its ends to the yokes e e.

The turret f is made as acylindrical shell, which fits and is free to rotate within the shell b and said turret has an outwardlyprojecting annular flange f at its upper end,

revolves, and to thus adjust said turret f'a toothedring is secured to the upper end of the turret, which is engaged by a pinion (not shown) adapted to be operated by any suitable means.

The parts thus far described are substantially the same as the corresponding parts of the application above referred to, and so far as this invention is concerned the same means may be provided for moving the turret-support back and forth on the horizontal bars a a as is illustrated in said application.

Beneath the tu rret fan oscillating tool-supporting frame is located which is carried by said turret, and, as herein shown, said frame consists, essentially, of a hollow cylinder 0 made larger in diameter at one end than at the other to provide ample space within it for the operating parts to be described and having its opposite ends closed by circular disks This frameis disposed in a horizontal position beneath the turretfand is supported at its opposite ends by clamps 0 which are formed as brackets or hangers secured to the under side of the turretf. When the clamps o are loosened, the frame may be turned on its horizontal axis freely; but when said clamps are tightened said frame will be held in fixed position.

The oscillating frame of contains within it a shaft 0, which passes lengthwise through it from end to end, havingits hearings in the circular disks 0 at the ends of said frame, and said shaft has secured to it a beveled gear 0 which is engaged by a beveled gear 0 secured to the lower end of an upright shaft 0", which passes up through said turret fand which has secured to its upper projecting end a toothed wheel 0 which is engaged and driven by a toothed wheel Z13, secured to the upright shaft which is disposed coincident with the vertical axis of the turret and which is driven by any suitable means so far as this invention is concerned. As the shaft 1' is rotated the horizontally-disposed shaft 0 will be correspondingly rotated. L

By disposing the shaft 2' coincident with the vertical axis of the turret and connecting the upright shaft 0 with it by gears, as described, it will be seen that the horizontal shaft 0 may be rotated regardless of the position of the turret and even as said turret is being revolved. The horizontal shaft 0 is disposed on the frame 0 also coincident with the horizontal axis of said frame, and by so disposing the shaft and connecting it by gears with the upright shaft 0 it will be seen that said shaft may be rotated regardless of the position of the oscillating frame bearing it and also regardless of the position of the turret.

A cutting-tool 0, which may be a pointingtool, is suitably supported by a tool-holder 0, which is attached to the extremity of an arm 0 pivoted at o to an ear projecting from the outside of the rotatable frame 0 A strap 19 is attached at its ends to ears projecting from the frame 0 and passes beneath the tool-carrying arm, and said strap serves as a fixed stop, which limits the downward thrust of the tool. The tool-carrying arm 0 is normally held pressed into engagement with said strap p by means of an elastic actuator, which in this instance consists of a flexible bulb 19', adapted to be connected by a pipe 19 with a cylinder (not shown) containing compressed air, and said bulb being in open communication with said cylinder it Will be seen that said bulb will likewise contain com-.

pressed air. An abutment p is provided just above the flexible bulb p, which is made as an L-shaped ear on the frame 0 and the flexible bulb p is interposed between said fixed abutment and the tool-carrying arm, and said flexible bulb thereby serves to normally press the tool-carrying arm down onto the stop 1).

To raise the toolcarrying arm against the action of the compressed air contained in the bulb, a cam 19 is secured to the horizontal shaft 0', which is adapted to engage the end of a lever 19, pivoted to a block 19 and connected by a link 19 with the arm 0 The movement of the pivoted arm 1) is guided by pins 2 2 on the arm working astride a fixed bar 19 The block 11 has a screw-threaded hole through it which receives one end of a right and left threaded screw 11 provided with a hand-wheel for turning it, the opposite end of said screw passing through a block 12 pivotally connected to an arm 19 which is rigidly secured to the frame o as, for instance, it may be secured to the fixed abutment thereon.

Itwill be seen that as the shaft 0 is revolved the cam 13 will be revolved and will engage the arm 19 and lift the tool-carrying arm 0 against the action of the compressed air contained in the bulb p, and whenever the cam releases or disengages said arm the compressed-air bulb will operate to suddenly thrust downward the tool-carrying arm.

Referring to Fig. 7, the oscillating frame 0 is swung to a position whereby the tool carried by the tool-carrying arm occupies a vertical position, and a bushing-tool is provided in lieu of a pointing-tool.

Referring to Fig. 8, the oscillating frame 0 is swung into substantially the same position as illustrated in Fig. 7 and a chiseling-tool provided, and with the parts in this position said chiseling-tool may operate upon the side of the stone.

When bushing the stone near the edge, there is danger of the edges or corners chipping oif, and to obviate this a frame is provided, (see Fig. 7,) which embraces the stone and holds the edges intact. This frame consists of four bars to secured together.

I claim- 1. In a stone-dressing machine,.a traveling turret-support, a turret carried by it revoluble on a vertical axis, a frame located beneath and carried by said turret and adapted to oscillate on a horizontal axis at right angles to the movement of the turret, means for securing said oscillating frame in whatever position it may be set, a tool carried by said 0s- ICC 724,707 Y I 3 Y cillating frame, .a stop carried by said oscillating frame which limits the downward movement of the tool, an elastic actuator for thrusting said tool downward against said stop, a cam for raising said tool against the action of said elastic actuator and means for rotating said cam in any position of ad justment of said oscillating frame and turret, substantially as described.

2. In a stone-dressing machine, a turretsupport, a turret carried by it revoluble on a vertical axis and bearing a 'tool, a stop for limiting the downward thrust of said tool, an elastic actuator for holding said tool in its lowermost position resisted by said stop consisting of a flexible bulb containing compressed air, a cam for raisingsaid tool against the action of said flexible bulb and means for rotating said cam, substantially as described.

3. In a stone-dressing machine, a turretsupport, a turret carried by it revoluble on a vertical axis, a frame located beneath and carried by said turret adapted to oscillate on a horizontal axis at right angles to the movement of the turret, means for securing said frame in whatever position it may be set, a tool-carrying arm pivoted to said oscillating frame, a tool carried by said arm, a stop for limiting the downward thrust of said tool, an elastic actuator for holding said tool in its lowermost position resisted by said stop, a cam for raising said tool against the action of said elastic actuator, and means for rotating said cam, substantially as described.

4:. In a stone-dressing machine, a traveling turret-support, a turret carried by it revoluble on a vertical axis, a frame located beneath and supported by said turret adapted to oscillate on a horizontal axis at right angles to the movement of the turret, means for securing said oscillating frame in whatever position it may be set, a tool-carrying arm borne by said oscillating frame, a tool carried by said arm, a stop for limiting the downward movement of said tool-carrying arm, an elastic actuator borne by said oscillating frame for thrusting said tool-carrying arm downward, a cam for raising said tool-carrying arm against the action of said elastic actuator, ahorizontal shaft bearing said cam having its bearings in said oscillating frame coincident with its axis, a driving-shaft connected therewith for operating it which passes up through the turret, and means for rotating said driving-shaft, substantially as described.

5. In a stone-dressing machine, a traveling turret-support, a turret carried by it revoluble on a vertical axis, a frame located beneath and supported by said turret adapted to oscillate on a horizontal axis at right angles to the movement of the turret, means for securing said oscillating frame in whatever position it may be set, a tool-carrying arm pivoted to said oscillating frame, a tool carried by said arm, a stop for limiting the downward movement of said tool-carrying arm, an elastic actuator borne by said oscillating frame for thrusting said tool-carrying arm downward, a cam for raising-said tool-carrying arm against the action of'said elastic actuator, a horizontal shaft bearing said cam having its bearings in said oscillating frame coincident with its axis, a driving-shaft connected therewith for operating it which passes up through the turret and means for rotating said driving-shaft, substantially as described.

6. In a stone-dressing machine, a turretsupport,'a turret carried by it revoluble on a vertical axis, a frame located beneath and supported by said turret adapted to oscillate on a horizontal axis at right angles touthe movement of the turret, a tool-carrying arm pivoted to said oscillating frame, a tool carried by said arm, a stop for limiting the downward movement of said tool-carrying arm, a flexible bulb containing compressed air for normally holdingsaid tool-carrying arm in engagement with said stop, a cam for raising said tool-carrying arm against the action of said flexible bulb and means for rotating said cam, substantially as described.

7. In a stone-dressing machine, a turretsupport, a turret carried by it revoluble on a vertical axis, a frame located beneath and supported by said turret adapted to oscillate on a horizontal axis at right angles to the movement of the turret, a tool-carrying arm pivoted to said oscillating frame, a tool carried by said arm, a stop for limiting the downward movement of said tool-carrying arm, a flexible bulb interposed between said tool-carrying arm and a fixed abutment for holding said tool-carrying arm in engagement with the stop, a cam for raising said tool-carrying arm against the action of said flexible bulb and means for rotating said cam,su bstantially as described.

8. In a stone-dressing machine, a traveling turret-support, a turret carried by it revoluble on a vertical axis and bearing a tool, a stop for limiting the downward thrust of said IIO tool, an elastic actuator for thrusting said tool downward consisting of a flexible bulb containing compressed air, a cam for raising said tool against the action of said flexible bulb and means for rotating said cam, substantially as described.

9. In a stone-dressing machine,a traveling turret-support, a turret carried by it revoluble on a vertical axis, a frame located beneath andsupported by said turret adapted to escillate on a horizontal axis at right angles to the movement of the turret, a tool carried by said oscillating frame, a stop for limiting the downward thrust of said tool, an elastic actuator for thrusting said tool downward consisting of a flexible bulb containing compressed air, a cam for raising said tool against the action of said flexible bulb and means for rotating said cam, substantially as described.

10. In a stone-dressing machine, a traveling turret-support, a turret carried by it revoluble on a vertical axis, a frame located beneath and supported by said turret adapted to oscillate on a horizontal axis at right angles to the movement of the turret, means for securing said oscillating frame in whatever position it may be set, a tool-carrying arm pivoted to said oscillating frame, a tool carried by said arm, a stop for limiting the downward movement of said tool-carrying arm, a flexible bulb containing compressed air for thrusting said tool downward, a cam for raising said tool carrying arm against the action of said flexible bulb and means for rotating said cam, substantially as described.

11. In astone-dressingmachine,atrave1ing turret-support, a turret carried by it revoluble on a vertical axis, a frame located beneath and supported by said turret adapted to oscillate on a horizontal axis at right angles to the movement of the turret, means for securing said oscillating frame in whatever position it may be set, a tool-carrying arm pivoted to said oscillating frame, a tool carried by said arm, a stop for limiting the downward movement of said tool-carrying arm, a flexible bulb interposed between said tool-carrying arm and a fixed abutment for thrusting said tool-carrying arm downward, a cam for raising said tool-carrying arm against the action of said flexible bulb and means for r0- tating said cam, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALBERT F. JONES. Witnesses:

B. J. NoYEs, H. B. DAVIS. 

